Question

In Fig. 11-32, a solid brass ball of mass 13 g will rollsmoothly
along a loop-the-loop track when released from rest alongthe
straight section. The circular loop has radius R = 2.8m,
and the ball has radius r <<
R.(a) What is h if the ball is
on the vergeof leaving the track when it reaches the top of the
loop?(b) If the ball is released at height
h =6.00R, what is the magnitude of the horizontal
forcecomponent acting on the ball at point Q?